Rotary spray-burner.



ROTARY SPRAY BURNER.

APPLICATION FILED MAY I7. i916.'

1,201,828. Patented oet.. 17,1916.

3 SHEETS-SHEET l.

L. E. JARVIS.

ROTARY SPRAY BURNER.

APPLICATION Flu-:D MAY 17. 1915.

Patented Oct. 17, 1916.

3 SHEETS-SHEET 2.

ATTORNEYS.

INVENTQR.

WI TN ESS L. E. JARVIS.

ROTARY SPRAY BURNER.

APPLICATION FILED IIIIIY I7. 191e.

Patented OCI. 17,1916.

3 SHEETS-SHEET 3.

WI TNESS 6INVENTpl'z. @wif/;

ATTORNEYS.

LENA E. JAiWIs,oF SAN rnANcIseo, CALIFORNIA.

Ro'iA'nar SPRAY-BERATER.

Specification of Letters Patent.

Application ined my i7, 191e. serial No. 98,953.

To all whom t may concern.'

Be it known that I, LENA E. JARVis, a citi' zen vof 'the United States, residing in the city and county of San Francisco and State of California, have invented certain new and useful Improvements in Rotary Spray- Burners, of which the following isa specification. n

The present invention relates to improve: ments in rotary spray burners for liquid fuel, such as` crude oil, and has for its principal objectsto provide an oil burner having an improved means at the nozzle end vthereof which is capable of thoroughly mixing the air and fuel before the same is ejectedl and which causes the fuel to be in theform of a confined flame on leaving the apparatus; to provide an improved means for forcingthe air for combustion under pressure and with a whirling motion through the discharge nozzle; to provide a simple, compact, and eiicient apparatus which is capable of manufacture at little cost and which is adapted for use where an economical apparatus capable of generating the maximum heat units with the minimum of fuel is desired. n

With the above mentioned and other objects in view the invention consists in the novel construction and combination of parts hereinafter described; illustrated in the accompanyingv drawings-and pointed out in the claims hereto a pended; it beingunderstood that various `c anges in the form, proportion, size and .minor details of construction within the scope of the claims may be resorted to without departing from the s irit or sacrificing any of the advantages o the invention.

To more fully comprehend the invention,

reference is directed to the accompanying drawings, whereinn Figure 1 is a view 1n side elevation, partly in section, of an embodiment of my invention, illustrating the motor, the mechanism for driving the pump, the shaftand rotary atomizer, the rotary fan and casing, the de- Ailector cone, the cup and cone housing, and

the auxiliary airinlet. Fig. 2 is a top plan view ofthe apparatus with the motor removed, illustrating more particularly the system of connections from the oil pump to the rotary burner shaft. Fig. 3 is a side elevation of the pump taken on line 3-3 of Fig. 2, disclosing the pump casing broken. l

. away. Fig.` 4 is a sectional View taken on line 4 4 of Fig. 1. Fig. 5 is a view in end elevation o f the delector cone illustrated in Fig. 4. Fig. 6 is a view in front elevation of the atomizing cup. Fig. 7 is a sectional .view taken on line 7--7 of 1. Fig. 8

is a sectional viewtaken on e 8--8 of eferring more particularly to the several views of the-drawings, wherein ylike characters of reference designate corresponding parts,-l indicates a suitable base mounting at one end a circular fan casing 2 provided centrally of its rear wall 3 with an air inlet opening 4, in the center of which is supported by the webs 5 the bearing support 6. The fan casing is provided centrally of its front wall 7 with an outlet 8 over which is fitted a cup housing 9, the open end 10 of which projectsinto the lire bpx through an opening in the wall 11 there- O `13, provided centrally of its front wall 14 with an outwardly projecting-A cone shaped extension l5 which surroundsthe cup housing 9 in spacedrelation the outer surface of the extension lying iiush with the surface 16 f the opening in the wall 11 of the fire box.

Extending through the bearing support 6 and s'upportedby a suitable bearing 17 carried thereby is a suitabl tubular shaft 18 which is horizontall 'disposed and the threaded outer end 19 of'ywhich projects `into the cup housing 9 and carries on its outer end the atomizing cup 20 having the outwardly flaring inner wall 21. Pressed or otherwise secured in the cup at the outer end of the axially disposed bore 22 which communicates at its inner end with the channel in the shaft 18, is an atomizing disk 23 provided with a plurality of slots 24 passing therethrough in a direction oblique to of the base of the atomizing cup and ad- Patented Oct. 17, 19216.

justable longitudinally thereon is the circular de'lector and agitator cup 25 which incloses the atomizing cup, as in Figs. 1 and 4 of the drawings.

The deectpr and agitator cup is open at its forward end and the inner face of the n Y forward portion 26 of the side wall thereof is outwardly flared, as in Fi 4, and the rearward portion 27 of the si e wall converges from the rear wall 28 to a point where it joins the forward portion 26. The diameter. of the y-ehamber at the point A,

where the portions 26 and 27 connect, is

slightly greater than the largest diameter of the atomizingcup. The rear wall 28 of the deflector and i agitator cup is formed with the air inlet openings 28 and the suplporting walls 29 between said openings are eveled or inclined, as in Fig. 4, to create a counter-'current of air or back pressure to that created by the hereinafter described fan, when the two are rotated in the direction of the arrow-Fig. 5. The outer surface of the forward end of the cup 25 rests on a flange 30 formed on the cup housing 9 and said flange provides a bearing for the outer end of thev cup 25 and prevents the 4air from passing, into.- the lire box at a point betweenthe cup housing 9 and the outer surface .of the cup 25.

Rotatably carried by the'shaft 18, and.v

positioned in the` fan casing, is a suitable fan or blower 32 provided with the radially disposed sector shaped channels 33 which open ',at their inner end adjacent the center of the fan or blower in communication with.

the airinlet opening 4 and open at their outer ends on the periphery of the fan. The outer wall lof the fan casing whichis in spaced relation to the fan carries on its in.

` thereof.

The shaft 18 extends at its rear through a suitable gear box 37 and is secured at its rear end to the motor shaft 38 which is rotated in the direction of the arrow by the action of the motor 39. The shaft 18 carries a suitable worm gear 40 and the shaft and gear are provided with registering o enings or channels 42 through which the uel oil passes into the bore in the shaft. A thrust bearing 43 is-interposed between one end of the worm gear 40 and the inner side of the gear box and suitable gaskets 41 prevent the oil from working out around the shaft 18. The Worm .gear 40 drives a suitable gear 44 also positioned in the gear box and said gear 44 is carried by a shaft 45 which extends from the gear box to a suitable pump housing 46 where it mounts one of the members 47 of a gear pump, and when the shaft 18 is driven in the diretti@ of the aiow+ Fig. 1, operates the Agear wheelsyof the pump y in the direction ofthe arrow-Fig. 3.

A fuel oil inlet48 communicates with one side of the pump housing 46 and an outlet 49 extends from the opposite side of said hous- Y ing and through the same the oil is pumped under pressure into a connection 50 which communicates with the gear box through the removable cover 51 thereof. The connection 50 is provided with the usual autolcates through a relief valve 55 with the fuel Supply- It will be apparent by the present construction that I provide a direct drive from the motor to the fan, atomizer and deflector cupl or cone and the rotation of the shaft causes the operation of the pump which supplies the fuel oil under pressure into the gear box to lubricate the pump drive gears and from where it passes into the tubular shaft.

Y The peripheral wall 12 of the auxiliary air inlet chamber is provided with the air inlet openings 56 which are controlled bythe movement of the ported ring 57 slidably mounted within the chamber and which is operated through the handle 58. The oil being forced through the 4tubular shaft under pressure will enter the atomizing conc where it is thoroughly atomized, and owing to the rotation of the cone covers'the inner surface thereof in a thin film. The rotation of the atomizing cup Vcauses the thin ilm of fuel oil to pass into the fire box in a spray radially from the outer end thereof. The fan or blower which is operated by the rotation of the shaft generates an air current which enters Vthe cuphousing under great velocity, where it is acted on by the walls or blades 29 which are inclined in a direction reverse to the entering air current, and which set up a back pressure to reduce the swirling or rotary action of the air and cause the same to pass in a stream of approximately even velocity between the outer surface 0f the atomizing cone and the delector cup. The action of the air stream issuing from between the atomizing cone and deiector cup is toy cone or cup the oil spray, which owing to the velocity of the atomizing cup leaves the dischaI ge end thereof in a radial path.v Should a ditional air be required for combustion over that delivered by the fan, the ring 57 may be adjusted 'to admit the required air through the auxiliaryl air inlet ports. Byv adjusting the deflector cone relatively to the atomlzing cup the shape of the flame'may be regulated, as .this adjustment .controls the volume of air' passing between the atomizing cup and into the channel thereof under pressure, an -atomizing cup carried by one end of said shaft and into which the fuel oil is forced under pressure, a deiector cone surrounding said cup in spaced relation thereto and mounted on said shaft to rotate therewith, a housing surrounding said cone and supporting the outerend thereof, and means for supplying air under pressure into said housing.

2. A rotary spray burner comprising a rotatably mounted supporting shaft provided with a fuel feed channel, means for rotating said shaft and for forcing fueloil into the channel thereof under pressure,

an atomizing cup carried -by one end of said shaft and into which the fuel oil is forced under pressure, a deflector cone surrounding said cup in spaced relation there# to and adjustably mounted for movement longitudinally thereof, a housing surrounding said cone and supporting the outer end thereof, and means for supplying air underl pressure into'said housing.

3. A rotary spray burner comprising a rotatably mounted supporting shaft provided with a fuel feed channel, means for rotating said shaft and for forcing fuel oil into the channel thereof under pressure, an atomizing cup carried by one end of said shaft and into which the fuel oil is forced under pressure, a defiector cone surrounding said cup in spaced relation thereto and mounted on said shaft to rotate therewith, said cone being capable of longitudinal movement on said shaft for adjustment relatively to said cup, a housing Surrounding said cone and supporting the outer end thereof, and means forl supplying air under pressure into said housing.

4. A rotary spray burner comprising a fan casing provided on its opposite faces with air inlet and discharge openings, a

rotatably mounted fuel supply shaft 'eX- tended through said casing, means for rotating said shaft and for supplying fuel thereto under pressure, a fan positioned 1n said -casing and carried by said shaft, a cupped housing extending from the discharge opening of said casing, an open ended deflector cone carried by said shaft and supported at its outer end by said housing, and an atomizing cup within said deflector cone and rotatably carried by said shaft.

5. A rotary spray burner comprising arotlatably mounted supporting shaft provided with a fuel feed channel, means for lrotating said shaft and for forcing fuel oil into the channel thereof under pressure, an atomizing cup carried by one end of said shaft and into which the fuel oil is forced A under pressure, an open ended def-lector cone surrounding said cup in spaced relation thereto, a housing surrounding said cone, and means for supplying air under pressure to said housing.

6. rotary spray burner comprising a rotatably mounted atomizing cup, means for rotating said cup and for supplying fuel oil thereto under pressure, an open ended deflector incasing said cup in spaced relation and capable of longitudinal movement relatively thereto, an open ended housing surrounding said deflector, and means for supplying air under pressure into said deflector.

rotary spray burner comprising a rotatably mounted supporting shaft provided with a fuel feed channel, an atomizing cup at one end thereof, means for rotating said shaft, a pump for supplying fuel oil under pressure to said shaft, a geared connection between said shaft and pump, a housing inclosing said geared connection, a fuel supply connection from said pump to said gear housing, and fuel inlet connections provided in said shaft and connecting the interior channel thereof with said housing.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LENA E. JARVIS. lVitnesses:

HARRY A. TOTTEN, D. B. RICHARDS. 

